/****************************************************************************
 *
 *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/


#ifndef StructureScanComplexItem_H
#define StructureScanComplexItem_H

#include "ComplexMissionItem.h"
#include "MissionItem.h"
#include "SettingsFact.h"
#include "QGCLoggingCategory.h"
#include "QGCMapPolygon.h"
#include "CameraCalc.h"

Q_DECLARE_LOGGING_CATEGORY(StructureScanComplexItemLog)

class StructureScanComplexItem : public ComplexMissionItem
{
    Q_OBJECT

public:
    StructureScanComplexItem(Vehicle* vehicle, QObject* parent = NULL);

    Q_PROPERTY(CameraCalc*      cameraCalc                  READ cameraCalc                     CONSTANT)
    Q_PROPERTY(Fact*            altitude                    READ altitude                       CONSTANT)
    Q_PROPERTY(Fact*            layers                      READ layers                         CONSTANT)
    Q_PROPERTY(bool             altitudeRelative            MEMBER _altitudeRelative            NOTIFY altitudeRelativeChanged)
    Q_PROPERTY(int              cameraShots                 READ cameraShots                    NOTIFY cameraShotsChanged)
    Q_PROPERTY(double           timeBetweenShots            READ timeBetweenShots               NOTIFY timeBetweenShotsChanged)
    Q_PROPERTY(double           cameraMinTriggerInterval    MEMBER _cameraMinTriggerInterval    NOTIFY cameraMinTriggerIntervalChanged)
    Q_PROPERTY(QGCMapPolygon*   structurePolygon            READ structurePolygon               CONSTANT)
    Q_PROPERTY(QGCMapPolygon*   flightPolygon               READ flightPolygon                  CONSTANT)
    Q_PROPERTY(bool             yawVehicleToStructure       MEMBER _yawVehicleToStructure       NOTIFY yawVehicleToStructureChanged)    ///< true: vehicle yaws to point to structure, false: gimbal yaws to point to structure

    CameraCalc* cameraCalc  (void) { return &_cameraCalc; }
    Fact* altitude          (void) { return &_altitudeFact; }
    Fact* layers            (void) { return &_layersFact; }

    int             cameraShots     (void) const;
    double          timeBetweenShots(void);
    QGCMapPolygon*  structurePolygon(void) { return &_structurePolygon; }
    QGCMapPolygon*  flightPolygon   (void) { return &_flightPolygon; }

    Q_INVOKABLE void rotateEntryPoint(void);

    // Overrides from ComplexMissionItem

    double          complexDistance     (void) const final { return _scanDistance; }
    int             lastSequenceNumber  (void) const final;
    bool            load                (const QJsonObject& complexObject, int sequenceNumber, QString& errorString) final;
    double          greatestDistanceTo  (const QGeoCoordinate &other) const final;
    QString         mapVisualQML        (void) const final { return QStringLiteral("StructureScanMapVisual.qml"); }

    // Overrides from VisualMissionItem

    bool            dirty                   (void) const final { return _dirty; }
    bool            isSimpleItem            (void) const final { return false; }
    bool            isStandaloneCoordinate  (void) const final { return false; }
    bool            specifiesCoordinate     (void) const final;
    bool            specifiesAltitudeOnly   (void) const final { return false; }
    QString         commandDescription      (void) const final { return tr("Structure Scan"); }
    QString         commandName             (void) const final { return tr("Structure Scan"); }
    QString         abbreviation            (void) const final { return "S"; }
    QGeoCoordinate  coordinate              (void) const final;
    QGeoCoordinate  exitCoordinate          (void) const final;
    int             sequenceNumber          (void) const final { return _sequenceNumber; }
    double          specifiedFlightSpeed    (void) final { return std::numeric_limits<double>::quiet_NaN(); }
    double          specifiedGimbalYaw      (void) final { return std::numeric_limits<double>::quiet_NaN(); }
    void            appendMissionItems      (QList<MissionItem*>& items, QObject* missionItemParent) final;
    void            setMissionFlightStatus  (MissionController::MissionFlightStatus_t& missionFlightStatus) final;
    void            applyNewAltitude        (double newAltitude) final;

    bool coordinateHasRelativeAltitude      (void) const final { return _altitudeRelative; }
    bool exitCoordinateHasRelativeAltitude  (void) const final { return _altitudeRelative; }
    bool exitCoordinateSameAsEntry          (void) const final { return true; }

    void setDirty           (bool dirty) final;
    void setCoordinate      (const QGeoCoordinate& coordinate) final { Q_UNUSED(coordinate); }
    void setSequenceNumber  (int sequenceNumber) final;
    void save               (QJsonArray&  missionItems) final;

    static const char* jsonComplexItemTypeValue;

signals:
    void cameraShotsChanged             (int cameraShots);
    void timeBetweenShotsChanged        (void);
    void cameraMinTriggerIntervalChanged(double cameraMinTriggerInterval);
    void altitudeRelativeChanged        (bool altitudeRelative);
    void yawVehicleToStructureChanged   (bool yawVehicleToStructure);

private slots:
    void _setDirty(void);
    void _polygonDirtyChanged(bool dirty);
    void _polygonCountChanged(int count);
    void _flightPathChanged(void);
    void _clearInternal(void);
    void _updateCoordinateAltitudes(void);
    void _rebuildFlightPolygon(void);
    void _recalcCameraShots(void);

private:
    void _setExitCoordinate(const QGeoCoordinate& coordinate);
    void _setScanDistance(double scanDistance);
    void _setCameraShots(int cameraShots);
    double _triggerDistance(void) const;

    int             _sequenceNumber;
    bool            _dirty;
    QGCMapPolygon   _structurePolygon;
    QGCMapPolygon   _flightPolygon;
    bool            _altitudeRelative;
    int             _entryVertex;       // Polygon vertext which is used as the mission entry point

    bool            _ignoreRecalc;
    double          _scanDistance;
    int             _cameraShots;
    double          _timeBetweenShots;
    double          _cameraMinTriggerInterval;
    double          _cruiseSpeed;
    CameraCalc      _cameraCalc;
    bool            _yawVehicleToStructure;

    static QMap<QString, FactMetaData*> _metaDataMap;

    Fact    _altitudeFact;
    Fact    _layersFact;

    static const char* _altitudeFactName;
    static const char* _layersFactName;

    static const char* _jsonCameraCalcKey;
    static const char* _jsonAltitudeRelativeKey;
    static const char* _jsonYawVehicleToStructureKey;
};

#endif
